NO20072859L - Adaptive equalizer with dual-mode mask generator with active outlets and a pilot reference signal amplitude control unit - Google Patents

Adaptive equalizer with dual-mode mask generator with active outlets and a pilot reference signal amplitude control unit

Info

Publication number
NO20072859L
NO20072859L NO20072859A NO20072859A NO20072859L NO 20072859 L NO20072859 L NO 20072859L NO 20072859 A NO20072859 A NO 20072859A NO 20072859 A NO20072859 A NO 20072859A NO 20072859 L NO20072859 L NO 20072859L
Authority
NO
Norway
Prior art keywords
equalizer
output
mask
update unit
dual
Prior art date
Application number
NO20072859A
Other languages
Norwegian (no)
Inventor
Rui Yang
Philip J Pietraski
Gregory S Sternberg
Bin Li
Mihaela C Beluri
Alpaslan Demir
Jung-Lin Pan
Original Assignee
Interdigital Tech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of NO20072859L publication Critical patent/NO20072859L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/30—Time-delay networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/159—Applications of delay lines not covered by the preceding subgroups
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/76—Pilot transmitters or receivers for control of transmission or for equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03509—Tapped delay lines fractionally spaced
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03535—Variable structures
    • H04L2025/03547—Switching between time domain structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03535—Variable structures
    • H04L2025/03547—Switching between time domain structures
    • H04L2025/03566—Switching between time domain structures between different tapped delay line structures
    • H04L2025/03585—Modifying the length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H04L2025/03617—Time recursive algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03681—Control of adaptation
    • H04L2025/03687—Control of adaptation of step size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/003—Correction of carrier offset at baseband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0038—Correction of carrier offset using an equaliser
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0065—Frequency error detectors

Abstract

En adaptiv utligner som inkluderer et utlignerfilter og en uttakskoefifisientgenerator blir brukt for å prosessere en sampeldatastrøm utledet fiia flere mottatte signaler blir her beskrevet. UttakskoefiFisientgeneratoren inkluderer en utligneruttaksoppdateringsenhet, en vektomorm kvadratestimator, en aktiv uttaksmaskegenerator, en veksler og en pilotamplitudereferanseenhet som blir brukt for å minimalisere utlignerfiltrets dynamiske område. En dynamisk maskevektor anvendes for å maskere aktive uttak som blir generert av utligneruttaksoppdateringsenheten når en umasket signalutgang fra utlignerfllteret velges av veksleren for å generere et feilsignal matet til utligneruttaksoppdateringsenheten. En fastmaskevektor brukes for å maskere aktive uttak generert av utligneruttaksoppdateringsenheten når en maskert signalutgang fra utlignerfllteret anvendes for å generere feilsignalet.An adaptive equalizer which includes an equalizer filter and an output coefficient generator is used to process a sample data stream derived from multiple received signals is described herein. The Output Coefficient Generator includes an equalizer output update unit, a vector squared estimator, an active output mask generator, an exchanger, and a pilot amplitude reference unit used to minimize the equalizer filter dynamic range. A dynamic mask vector is used to mask active outputs generated by the equalizer output update unit when an unmasked signal output from the equalizer filter is selected by the exchanger to generate an error signal fed to the equalizer output update unit. A fixed mask vector is used to mask active outputs generated by the equalizer output update unit when a masked signal output from the equalizer filter is used to generate the error signal.

NO20072859A 2004-11-05 2007-06-05 Adaptive equalizer with dual-mode mask generator with active outlets and a pilot reference signal amplitude control unit NO20072859L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US62518804P 2004-11-05 2004-11-05
PCT/US2005/039635 WO2006052596A2 (en) 2004-11-05 2005-11-02 Adaptive equalizer with a dual-mode active taps mask generator and a pilot reference signal amplitude control unit

Publications (1)

Publication Number Publication Date
NO20072859L true NO20072859L (en) 2007-06-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
NO20072859A NO20072859L (en) 2004-11-05 2007-06-05 Adaptive equalizer with dual-mode mask generator with active outlets and a pilot reference signal amplitude control unit

Country Status (10)

Country Link
US (3) US7570690B2 (en)
EP (1) EP1807932A4 (en)
JP (1) JP4512138B2 (en)
KR (2) KR20070086972A (en)
CN (1) CN101053153A (en)
CA (1) CA2588262A1 (en)
MX (1) MX2007005453A (en)
NO (1) NO20072859L (en)
TW (3) TWI419520B (en)
WO (1) WO2006052596A2 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2588262A1 (en) * 2004-11-05 2006-05-18 Interdigital Technology Corporation Adaptive equalizer with a dual-mode active taps mask generator and a pilot reference signal amplitude control unit
US7532667B2 (en) * 2004-11-05 2009-05-12 Interdigital Technology Corporation Pilot-directed and pilot/data-directed equalizers
US7457347B2 (en) * 2004-11-08 2008-11-25 Interdigital Technology Corporation Method and apparatus for estimating and correcting baseband frequency error in a receiver
US7477634B1 (en) * 2005-02-10 2009-01-13 Advanced Receiver Technologies, Llc Method and apparatus for a chip-level no-decision feedback equalizer for CDMA wireless systems
US7668226B2 (en) * 2005-02-23 2010-02-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for estimating gain offsets for amplitude-modulated communication signals
US20060209932A1 (en) * 2005-03-18 2006-09-21 Qualcomm Incorporated Channel estimation for single-carrier systems
US20060217819A1 (en) * 2005-03-23 2006-09-28 Chengyu Cao Low-pass adaptive/neural controller device and method with improved transient performance
JP4480765B2 (en) * 2005-09-06 2010-06-16 富士通株式会社 Equalizer device
US7801547B2 (en) * 2005-12-22 2010-09-21 Telefonaktiebolaget L M Ericsson (Publ) System and method for determining downlink signaling power in a radio communication network
US8559573B2 (en) * 2005-12-27 2013-10-15 Agere Systems Llc Communications circuit and method with re-positionable sampling span
CN101385297B (en) * 2006-02-13 2011-08-31 Nxp股份有限公司 Filter weight estimation device with update at HSDSCH symbol rate, for a symbol level equaliser
GB0721429D0 (en) * 2007-10-31 2007-12-12 Icera Inc Processing signals in a wireless communications environment
US8401119B2 (en) * 2008-01-10 2013-03-19 Thomson Licensing Equalizer based symbol timing recovery with symbol enabled control
EP2241020B1 (en) * 2008-01-10 2017-03-15 Telefonaktiebolaget LM Ericsson (publ) Method and arrangement for saving radio resources by determining power offset values in the user equipment
JP5001196B2 (en) * 2008-02-21 2012-08-15 三菱電機株式会社 Receiving apparatus and communication system
KR101493924B1 (en) * 2008-06-04 2015-02-16 삼성전자주식회사 Apparatus and method for receiver based on equalizer in mobile communication system
KR101549627B1 (en) * 2010-01-11 2015-09-02 삼성전자주식회사 Apparatus and method for chip level equalization in wireless communication system
JP5679431B2 (en) * 2011-01-27 2015-03-04 株式会社日立国際電気 Receiver
US8855172B2 (en) 2011-12-09 2014-10-07 Telefonaktiebolaget Lm Ericsson (Publ) Non-redundant equalization
US9264082B2 (en) * 2012-06-11 2016-02-16 Bae Systems Information And Electronic Systems Integration Inc. System and algorithm for multipath mitigation
US8848775B2 (en) * 2012-08-29 2014-09-30 Intel Mobile Communications GmbH Circuit for signal processing and method performed by such circuit
US9537678B2 (en) * 2014-02-13 2017-01-03 Samsung Electronics Co., Ltd Method and apparatus for robust two-stage OFDM channel estimation
CN105830130B (en) * 2014-06-13 2019-05-28 华为技术有限公司 Select the method and control equipment of controlled device
US10050774B1 (en) * 2017-05-02 2018-08-14 MACOM Technology Solutions Holding, Inc. Mitigating interaction between adaptive equalization and timing recovery
CN112291009B (en) * 2020-10-20 2022-02-08 武汉邮电科学研究院有限公司 Multi-stage equalizer for coherent reception of burst data and implementation method

Family Cites Families (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569075B1 (en) * 1984-08-10 1988-04-15 Giravions Dorand METHOD AND DEVICE FOR RELIEF RECORDING AND RETURN OF MOVED VIDEO IMAGES
CA1282464C (en) * 1985-10-23 1991-04-02 Masanori Ienaka Phase-locked oscillator
JPH02214323A (en) 1989-02-15 1990-08-27 Mitsubishi Electric Corp Adaptive high pass filter
US5159282A (en) 1989-12-06 1992-10-27 Kabushiki Kaisha Toshiba Demodulation apparatus incorporating adaptive equalizer for digital communication
JPH03230649A (en) 1990-02-05 1991-10-14 Matsushita Electric Ind Co Ltd Demodulator with automatic frequency adjustment
JPH03245628A (en) 1990-02-23 1991-11-01 Matsushita Electric Ind Co Ltd Terminal equipment for time division multiplex accessing device
JPH0738563B2 (en) * 1992-09-25 1995-04-26 日本電気株式会社 Adaptive filter adaptation method and apparatus
JP3281136B2 (en) * 1993-09-17 2002-05-13 富士通株式会社 Echo canceller
EP0656694A3 (en) * 1993-11-30 1999-12-01 AT&T Corp. Equalizer with line length detection
US5467370A (en) 1994-03-24 1995-11-14 Silicon Systems, Inc. Method and apparatus for an adaptive three tap transversal equalizer for partial-response signaling
US5664595A (en) 1994-09-20 1997-09-09 Vonderhorst; Eric John Screen apparatus positionable atop an umbrella for transportable personal protection from flying insects
US5572558A (en) 1994-11-17 1996-11-05 Cirrus Logic, Inc. PID loop filter for timing recovery in a sampled amplitude read channel
GB2309866A (en) 1996-01-30 1997-08-06 Sony Corp Frequency error detection in mobile radio communications
GB2320866A (en) * 1996-12-30 1998-07-01 Daewoo Electronics Co Ltd An equalization arrangement in which initial values which determine tap coefficients are adaptively chosen
US5940450A (en) 1997-02-28 1999-08-17 Hitachi America, Ltd. Carrier recovery method and apparatus
US5970154A (en) * 1997-06-16 1999-10-19 Industrial Technology Research Institute Apparatus and method for echo cancellation
US5974434A (en) 1997-10-07 1999-10-26 Ralph E. Rose Method and apparatus for automatically tuning the parameters of a feedback control system
US6134260A (en) 1997-12-16 2000-10-17 Ericsson Inc. Method and apparatus for frequency acquisition and tracking for DS-SS CDMA receivers
TW428309B (en) 1998-02-12 2001-04-01 Princeton Technology Corp Frequency adjusting method and device for oscillator built in the integrated circuit
US6304598B1 (en) * 1998-08-28 2001-10-16 Broadcom Corporation Apparatus for, and method of, reducing power dissipation in a communications system
TW384582B (en) 1998-05-25 2000-03-11 Chungshan Inst Of Science & Te Method for correcting the carrier frequency errors and spread spectrum coding sequence clock in direct sequence spread spectrum communication system and the receiver using the method
US6577690B1 (en) 1998-06-25 2003-06-10 Silicon Automation Systems Limited Clock recovery in multi-carrier transmission systems
US6771722B2 (en) 1998-07-31 2004-08-03 Motorola, Inc. Channel estimator and method therefor
US6807228B2 (en) * 1998-11-13 2004-10-19 Broadcom Corporation Dynamic regulation of power consumption of a high-speed communication system
US6289047B1 (en) * 1998-08-28 2001-09-11 Broadcom Corporation Dynamic regulation of power consumption of a high-speed communication system
JP3583309B2 (en) * 1999-02-17 2004-11-04 富士通株式会社 Method and apparatus for controlling multi-wavelength optical amplifier
US6735248B2 (en) * 1999-03-10 2004-05-11 International Business Machines Corporation Fast converging equalizer for a demodulator
JP4431210B2 (en) 1999-05-10 2010-03-10 株式会社ルネサステクノロジ Frequency deviation detecting device and frequency deviation detecting method
US6400758B1 (en) 1999-06-24 2002-06-04 Ibiquity Digital Corporation Method and apparatus for training sequence identification in an AM compatible digital audio broadcasting system
JP3190318B2 (en) 1999-07-07 2001-07-23 三菱電機株式会社 Frequency error estimating apparatus and frequency error estimating method
FR2799074A1 (en) * 1999-09-28 2001-03-30 Koninkl Philips Electronics Nv CLOCK RHYTHM RECOVERY DEVICE USING A FIXED EQUALIZER
JP2001177451A (en) * 1999-12-15 2001-06-29 Matsushita Electric Ind Co Ltd Data receiver
FI20001289A (en) 2000-05-30 2001-12-01 Nokia Mobile Phones Ltd Method and arrangement for reducing frequency offset in a radio receiver
US20020041678A1 (en) * 2000-08-18 2002-04-11 Filiz Basburg-Ertem Method and apparatus for integrated echo cancellation and noise reduction for fixed subscriber terminals
JP3360069B2 (en) 2000-08-30 2002-12-24 株式会社東芝 Automatic frequency control circuit
US6678230B2 (en) * 2000-10-31 2004-01-13 Matsushita Electric Industrial Co., Ltd. Waveform equalizer for a reproduction signal obtained by reproducing marks and non-marks recorded on a recording medium
GB2369275B (en) 2000-11-21 2004-07-07 Ubinetics Ltd A rake receiver and a method of providing a frequency error estimate
JP2002217776A (en) 2001-01-12 2002-08-02 Toshiba Corp Mobile communication terminal and its automatic frequency control circuit
US7110349B2 (en) * 2001-03-06 2006-09-19 Brn Phoenix, Inc. Adaptive communications methods for multiple user packet radio wireless networks
JP3633497B2 (en) 2001-03-22 2005-03-30 三菱電機株式会社 Receiver for performing frequency error estimation and method for estimating frequency error
US7512535B2 (en) * 2001-10-03 2009-03-31 Broadcom Corporation Adaptive postfiltering methods and systems for decoding speech
US6904098B1 (en) 2001-10-16 2005-06-07 Wideband Semiconductors, Inc. Linear phase robust carrier recovery for QAM modems
US7092438B2 (en) * 2002-01-22 2006-08-15 Siemens Communications, Inc. Multilevel decision feedback equalizer
GB2389283B (en) 2002-05-31 2004-07-14 Matsushita Electric Ind Co Ltd Bandwidth adaptation rule for adaptive noise filter for inverse filtering with improved disturbance rejection bandwidth
US7027503B2 (en) * 2002-06-04 2006-04-11 Qualcomm Incorporated Receiver with a decision feedback equalizer and a linear equalizer
KR100442877B1 (en) * 2002-06-15 2004-08-06 삼성전자주식회사 Channel Equalizing and Carrier Recovery System for HomePNA receiver, and Method there-of
US6968001B2 (en) * 2002-08-21 2005-11-22 Qualcomm Incorporated Communication receiver with virtual parallel equalizers
JP3877158B2 (en) 2002-10-31 2007-02-07 ソニー・エリクソン・モバイルコミュニケーションズ株式会社 Frequency deviation detection circuit, frequency deviation detection method, and portable communication terminal
US7180963B2 (en) 2002-11-25 2007-02-20 Ali Corporation Digital receiver capable of processing modulated signals at various data rates
US8135057B2 (en) * 2002-12-20 2012-03-13 Texas Instruments Incorporated Reconfigurable chip level equalizer architecture
US7251273B2 (en) 2003-02-19 2007-07-31 Advanced Micro Devices, Inc. Minimum equalization error based channel estimator
US7792184B2 (en) * 2003-04-24 2010-09-07 Qualcomm Incorporated Apparatus and method for determining coefficient of an equalizer
US7315822B2 (en) * 2003-10-20 2008-01-01 Microsoft Corp. System and method for a media codec employing a reversible transform obtained via matrix lifting
US20050232347A1 (en) * 2004-04-15 2005-10-20 Mediatek Incorporation Apparatus and method for noise enhancement reduction in an adaptive equalizer
US7561618B2 (en) * 2004-04-30 2009-07-14 Texas Instruments Incorporated Reconfigurable chip level equalizer architecture for multiple antenna systems
US7388907B2 (en) * 2004-08-09 2008-06-17 Texas Instruments Incorporated Frequency domain equalization
US7483481B1 (en) * 2004-08-31 2009-01-27 Adtran, Inc. System and method for adaptively updating precoder taps
US20060114974A1 (en) * 2004-11-05 2006-06-01 Interdigital Technology Corporation Normalized least mean square chip-level equalization advanced diversity receiver
CA2588262A1 (en) * 2004-11-05 2006-05-18 Interdigital Technology Corporation Adaptive equalizer with a dual-mode active taps mask generator and a pilot reference signal amplitude control unit
US7639995B2 (en) * 2005-06-24 2009-12-29 Agere Systems Inc. Reconfigurable communications circuit operable with data channel and control channel
US8559573B2 (en) * 2005-12-27 2013-10-15 Agere Systems Llc Communications circuit and method with re-positionable sampling span

Also Published As

Publication number Publication date
TWI296475B (en) 2008-05-01
TW200711395A (en) 2007-03-16
KR20070086972A (en) 2007-08-27
CN101053153A (en) 2007-10-10
US7570690B2 (en) 2009-08-04
TWI419520B (en) 2013-12-11
US20120314755A1 (en) 2012-12-13
EP1807932A2 (en) 2007-07-18
MX2007005453A (en) 2007-05-21
WO2006052596A2 (en) 2006-05-18
WO2006052596A3 (en) 2006-12-14
KR100888413B1 (en) 2009-03-13
TW200625889A (en) 2006-07-16
US20060171451A1 (en) 2006-08-03
JP4512138B2 (en) 2010-07-28
KR20070068474A (en) 2007-06-29
CA2588262A1 (en) 2006-05-18
JP2008519572A (en) 2008-06-05
TW200947981A (en) 2009-11-16
US8265130B2 (en) 2012-09-11
US20090290630A1 (en) 2009-11-26
EP1807932A4 (en) 2009-09-02

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